Ore-concentrator



Patented Aug. 4, 1891.

O. E. SEYMOUR. ORE GONGENTRATOR.

mm 7-4, In

(No Model.)

a N m mu Hllllll THi MORRIS Pink! C04 PHOTO-H1110" WASHINGTON, E C,

UNITED STATES PATENT OFFICE.

CHARLES E. SEYMOUR, OF HURLEY, WISCONSIN.

ORE-CONOENTRATOR.

SPECIFICATION forming part of Letters Patent No. 456,968, dated Augustt,1891..-

I Application filed November 7 1890- Serial No. 370,679. (No model.)

To 60% whom it may concern.-

Be it known that 1, CHARLES E. SEYMOUR, of Hurley, in the county ofAshland and State of Visconsin, have invented a new and usefulImprovement in Ore- Concentrators, of which the following is adescription, reference being had to the accompanying drawings, which area part of this specification.

My invention relates to improvementsin an ore-concentrator for whichLetters Patent of the United States No. 436,808 were issued to me onSeptember 23, 1890.

The novel features of the improvements will be hereinafter specificallyclaimed.

In the drawings, Figure 1 is an elevation of the complete device withwhich my improvements are used, parts being broken away and other partsshown in vertical section for convenience of illustration. Fig. 2 is adetail giving a top plan view of the device, parts being broken awayforbetterillustration.

Ais the frame on which the operative mechanism is supported. Theconcentrator-bowl B is supported rigidly on the verticalcentrally-piercing shaft 0. The shaft 0 has its bearings in cross-piecesof the frame, and is movable revolubly and vertically therein. At itslower end the shaft 0 terminates in a head or disk 0, having twocrown-cams D, diametrically opposite each other, projecting,

downwardly therefrom. The disk 0', through its cams D, rests on theblock E, fixed 011 the frame, which block has an even number ofupwardly-projecting inclines or cams D D, arranged in pairs in a circleso as to register with the cams D. The cams on the block E may be ineven number, but preferably four, six, or eight. Six are shown in thedrawings. These cams are adapted to raise the bowl and allow it to dropseveral times, depending on the number of the cams in each revolution ofthe bowl horizontally.

The shaft 0 is hollow throughout its entire length, and a correspondingaperture opens through the block E and base of the frame to a tank 1*.The shaft is provided with ports G, located at and just above the innersurface of the bowl. Acnp-shaped valve H, fitted water-tight but movablyabout the shaft O and provided with a rubber packing H in its loweredge, fits normally against the bottom the shaft 0. Springs K K arecoiled about the shaft 0 respectively above and below the bowl B andhear at one end respectively against the collars L and L, rigid on theshaft, and against sleeve-nuts M and M, turning by a screw-threadrespectively into the blocks or plates N N, fixed on the frame. Thesesprings are adapted to control limitedly the vertical movements of theshaft and its supported bowl. An annular trough 0 about the edge of thebowl is adapted to receive the overflow of its contents and dischargethe same through the pipe 0'.

A pulley P, loose on the shaft 0, is adapted to transmit motion theretofrom the powersupplying mechanism. A friction-block R, splined on theshaft 0, so as to have revoluble movement therewith and verticalmovement thereon, is adapted to be shifted into frictional contact withand thereby clutch the pulley P, so asto transmit the motion thereof tothe shaft 0 and to be shifted away from the pulley P and into frictionalcontact with a plate R, fixed on the frame, and thereby check andultimately stop the rotation of the shaft. An elastic lever S, pivotedmedially on a post T, fixed on thefraine, is provided with bifurcateinner ends, which ride in a groove therefor in the block B. Thesebifurcate ends of the lever S are pivoted at diametrically-oppositesides to the bearing-plates U U, fitted about and bearing against thecentral circular part or neck of the circular block R. The lever S isadapted for shifting the block R vertically into contact with the pulleyP or with the plate K, and is arranged to be locked in position by thespring-latch S thereon, arranged to engage with a rack therefor on thepost T, fixed on the frame. An elastic lever-handle V, pivoted mediallyon the post T, is provided with bifurcate inner ends riding in a groovein a collar WV, fixed on the end of the valvestem 1. This lever-handle Vis adapted for raising and closing the valve H, and is locked inposition by a spring-latch V thereon, arranged to engage with a rack onthe post T. The elasticity of the levers S and V is such as to permit ofthe slight vertical movement of the bowl B, caused by the cams D runningover the cams D, without disturbing the relation of the block R to thepulley P or relation of the valve II to the bowl B, but are yet stiffenough to serve for lever-handles for shifting the block R and raisingthe valve II, respectively, as hereinbefore described.

WVhat I claim as new, and desire to secure by Letters Patent, is

In an ore-concentrator, the combination, with a frame, a bowl having acentrally-piercing hollow shaft with ports in the shaft, and means forrotating the bowl and jumping it up and down, of a movable valve aboutthe shaft to close the ports thereto, a valve-stem extending through theshaft and having a grooved collar thereon, an independent elastic leverpivoted medially on the frame, one arm of which lever rides in thecollar on the valvestem, the other arm being provided with a latcharranged to engage a rack adj ustably, the rack fixed on the frame foradjusting and holding the elastic valve-stem lever, and independentmeans for starting and stopping the motion of the bowl, substantially asdescribed.

In testimony whereof I affix my signature in presence of two witnesses.

, CHARLES E. SEYMOUR. Witnesses:

GEO. O. FOSTER, (J. H. MUNGER.

